How do we quantify the effects of human violence for Humankind?

A shell explodes (11/14) in the Syrian (CC BY 2.0) by Jordi Bernabeu

This might seem a strange idea: calculating the cost of 'man-made' violences and their impacts on humanity. This is, however, the core of the analysis carried out by the Institute for Economics and Peace (IEP). ln short, the 2017 Global Peace of Index shows that the world became more peaceful in the last year, however, over the last decade it has become significantly less peaceful. And globally the economic impact of violence on the economy is enormous. lceland remains the most peaceful country in the world, reporting one homicide in 2016. Unsurprisingly the lowest placed countries listed on this index are at war. And 'ranking first', Syria where average lite expectancy has declined by 20 years. Europe remains the most peaceful region in the world. However, the deterioration of the situation in Turkey and the terrorist attacks in particular in France, the UK and Belgium have obviously had a negative impact on the index. Focusing on the economic impact of conflicts, the report found that in 2016 it was US$14.3 Trillion or 12.6% of world GDP. That amount represents one eight of the world income. This may be a calculation a bit theoretical. How, for instance, do we evaluate the cost of human life? But what is certain, is that homicides and wars have an enormous cost for humankind. In fact, the main points of this survey are difficult to challenge.